The best time of the year to buy commercial beef cattle is in the fall. The data show that growth performance drops in calves born in May through September. This is completely contrary to the effects of cold on performance in winter-born calves in northern states where temperatures are more severe and high death loss and the potential for low growth rate in calves are major concerns. You can call an AI technician and he/she will do the rest. The data presented do not clearly identify a specific month to calve and breed cows in Texas, but there is no question that summer calving (May through September) in the eastern, central, southern and the Gulf Coast regions of Texas will result in significantly reduced calf performance. To the contrary, large frame cows that calved in the spring had higher profits than when calved in the fall. Research has shown that this reduction in fertility is a result of heat stress brought on by high temperature and humidity that combine to raise the temperature/humidity index. In some areas of the Midwest and Southwest, cattle should be de-wormed in the fall to rid animals of worms that become embedded in the stomach lining. What about dairy cows and heifers? In six other Texas trials, management steps to eliminate summer-born calves and concentrate the calving season in the cooler months of spring or fall resulted in an average 74 percent increase (range of 27 percent to 150 percent) in production. It is the same algorithm we currently use with the AccuBreed™ wireless heat detection system. This stage of heat generally lasts 6 to 24 hours, 18 on average. intervals of eight to 16 hours after the onset of high activity and trended lower for both earlier and later A.I. In order to get her to calve on the same date as the previous years, allow for 80 to 90 days of rest before getting her bred again. Heat stress in cows is known to cause hormone imbalances, reduced quality of ova, early embryo death and reduced blood flow to the uterus. Ayrshire. When five estrous cows were individually presented with an opportunity to spend time on dirt or on concrete in the presence of a tied cow which was either an estrous cow or a cow not in heat, the test cow spent an average 70 percent of the time on dirt. This article will give you an answer. What about bos indicus cattle? A complicated problem in breeding is to determine when your cows are ready for slaughter. It is likely to be less expensive to start with yearling heifers and get them bred at 15 months of age, then calve them out as your first beef cattle. Table 4 shows that if cows exhibit their first estrus after the month of May in Central Texas (Trial 1) or April in the Gulf Coast region (Trial 2), the chances of conceiving are dramatically reduced. If the goal is to have a cow that calved this year on April 1 to calve next year on April 1, and assuming a gestation period is 283 days, there are 82 days remaining to have the cow prepare to rebred and conceive a calf for next year. By: L.R. But in case if you are raising a bull in your herd, then you will not need to worry about when your cows go into heat. and remain high through the breeding season. Only 3 percent (Trial 2) to 5 percent (Trial 1) of pregnancies are attributed to cows that conceive at their third estrus. For worm and grub control, using a pour-on containing moxidectin or ivermectin during early summer will control both parasites and give several weeks of horn fly control also. The goal was to evaluate time-to-insemination in over 2,500 bos taurus females. Data from an Arkansas trial show that calf performance and profits are best in small to medium frame cows that calve in the fall compared to spring months. • Cows calving in the fall normally need more supplemental feed in the winter, unless When the criteria are fulfilled, we refer to the first mount in the three mount sequence to define the onset of heat. However, there are breeding and calving dates that probably should be avoided because differences in climate in regions of Texas can affect the availability and conditions of pasture needed for nutrition of pregnant cows and calves. From The Old Farmer's Almanac, when is the best day to breed animals, based on the Moon's sign. Follow the steps provided in the article linked in this … Principle 1—Regardless of management influences, fertility among cows is variable. Heifers are generally more nervous than a … Are we going to see time-to-inseminate differences with heifers? If cows are wintered on hay, spring pasture offers the best feed for breeding season and spring calving is … As any cattleman knows, the time of year when cows calve directly affects many herd man- agement practices: • The start of calving is dictated by the start of breeding. These factors, either singly or in combination, result in low fertility. The special characteristics are … Note that the lower pregnancy rates in Herd 1 (1989,1990) and Herd 2 (1988, 1989) were attributed to nutritional problems. The Dexter cow is one of … If the probability of correctly treating a cow (finding and injecting her with the appropriate product on the correct day) is 95 percent, then the probability that all cows are handled correctly at each of four handlings is only 81.4 percent (0.95 x 0.95 x 0.95 x 0.95). It is best to plan breeding season for the time of year when forage quality is at its best. 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